Gibneys in County Meath, Ireland

Re: Gibney

My g-g-grandmother was Catherine Gibney, b. ca. 1844. She was married to James McCann in Castlepollard in 1859; they left with their 3-year old son Patrick J., in 1863 or 1864 for USA. Catherine had two siblings known to me, Patrick and Anna (not your Anna, however). Supposedly,their parents were Brian/Bryan Gibney and Bridget Ledwidge. Can you make any connections?